# How do you find greatest common factor?

## How do you find greatest common factor?

The greatest common factor is the greatest factor that divides both numbers. To find the greatest common factor, first list the prime factors of each number. 18 and 24 share one 2 and one 3 in common. We multiply them to get the GCF, so 2 * 3 = 6 is the GCF of 18 and 24.

### What is the GCF of 12 and 16?

4
GCF of 12 and 16 by Listing Common Factors There are 3 common factors of 12 and 16, that are 1, 2, and 4. Therefore, the greatest common factor of 12 and 16 is 4.

#### What is the GCF of 21 and 28?

7
GCF of 21 and 28 by Listing Common Factors There are 2 common factors of 21 and 28, that are 1 and 7. Therefore, the greatest common factor of 21 and 28 is 7.

What is the HCF of 27 30?

Therefore, the greatest common factor of 27 and 30 is 3.

How do you calculate the greatest common factor?

To find the greatest common factor (GCF) between numbers, take each number and write it’s prime factorization. Then, identify the factors common to each number and multiply those common factors together.

## What is the GCF of 60 and 60?

The gcf of 60 and 60 is 60. Find the prime factorization of 60. 60 = 2 × 2 × 3 × 5. Find the prime factorization of 60. 60 = 2 × 2 × 3 × 5. To find the gcf, multiply all the prime factors common to both numbers: Therefore, GCF = 2 × 2 × 3 × 5.

### What is an example of greatest common factor?

The greatest common factor (GCF) of a set of numbers is the largest number that is a factor of all those numbers. For example, the GCF of the numbers 4 and 6 is 2 because 2 is the greatest number that’s a factor of both 4 and 6.

#### What is the highest common factor?

The Highest Common Factor (H.C.F) of two (or more) numbers is the largest number that divides evenly into both numbers. In other words the H.C.F is the largest of all the common factors. The common factors or of 12 and 18 are 1, 2, 3 and 6. 